/* Atlas Orientation District — shared styles.
   Used by all Atlas orientational pages to keep a coherent design language
   with the original apex/atlas/index.html (dark theme, IM Fell English). */

:root{
  --bg: #0b0b0c;
  --fg: #f2f0ea;
  --muted: rgba(242,240,234,.7);
  --faint: rgba(242,240,234,.42);
  --hair: rgba(242,240,234,.18);
  --accent: rgba(242,240,234,.12);
  --serif: "IM Fell English", Georgia, "Times New Roman", serif;
  --smallcaps: "IM Fell English SC", Georgia, "Times New Roman", serif;
  --script: "Great Vibes", "Brush Script MT", cursive;
  --max: 980px;
  --pad: clamp(22px, 4vw, 44px);
  --radius: 8px;
  --stone: #161514;
  --bronze: #9b8056;
  --verdigris: #73947f;
}

*{ box-sizing: border-box; }
html, body{ min-height: 100%; }

.atlas-page{
  margin: 0;
  background:
    linear-gradient(180deg, rgba(115,148,127,.12), transparent 28rem),
    radial-gradient(circle at 50% 0%, rgba(242,240,234,.075), transparent 32rem),
    var(--bg);
  color: var(--fg);
  font-family: var(--serif);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.atlas-shell{
  --corniceH: 84px;
  --stepH: 118px;
  --pairEdgeInset: clamp(14px, 4.5vw, 64px);
  --colW: clamp(42px, 6vw, 76px);
  --colGap: clamp(10px, 1.6vw, 22px);
  min-height: 100vh;
  overflow-x: hidden;
}

.atlas-shell,
.atlas-shell *{
  overflow-wrap: break-word;
}

.atlas-shell .cornice{
  background:
    linear-gradient(180deg, rgba(255,255,255,.14), rgba(0,0,0,.48)),
    repeating-linear-gradient(90deg, rgba(155,128,86,.24) 0 12px, rgba(255,255,255,.035) 12px 18px),
    var(--stone);
  border-bottom: 1px solid rgba(242,240,234,.22);
  box-shadow: 0 14px 32px rgba(0,0,0,.46);
}

.atlas-shell .stairs{
  height: var(--stepH);
  background:
    repeating-linear-gradient(180deg, rgba(242,240,234,.14) 0 1px, transparent 1px 23px),
    linear-gradient(180deg, rgba(22,21,20,.05), rgba(0,0,0,.66)),
    var(--stone);
  border-top: 1px solid rgba(242,240,234,.16);
}

.atlas-shell .column .cap,
.atlas-shell .column .plinth{
  background:
    linear-gradient(180deg, rgba(242,240,234,.16), rgba(0,0,0,.42)),
    var(--stone);
  border: 1px solid rgba(242,240,234,.16);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.12), 0 10px 24px rgba(0,0,0,.28);
}

.atlas-shell .column .shaft{
  background:
    linear-gradient(90deg, rgba(0,0,0,.48), rgba(242,240,234,.10), rgba(0,0,0,.52)),
    repeating-linear-gradient(180deg, rgba(155,128,86,.16) 0 3px, transparent 3px 18px),
    #141312;
  border-inline: 1px solid rgba(242,240,234,.15);
}

.atlas-main{
  position: relative;
  z-index: 20;
  width: min(var(--max), calc(100% - (var(--pad) * 2)));
  margin: 0 auto;
  padding: calc(var(--corniceH, 0px) + clamp(36px, 7vw, 86px)) 0 calc(var(--stepH, 0px) + clamp(32px, 6vw, 76px));
}

.atlas-page a{
  color: rgba(242,240,234,.88);
  text-underline-offset: 4px;
}

.atlas-page a:hover{
  color: var(--fg);
}

.atlas-landing{
  width: min(1040px, calc(100% - (var(--pad) * 2)));
}

.atlas-threshold{
  min-height: calc(100vh - var(--corniceH) - var(--stepH));
  display: grid;
  align-content: center;
  gap: 28px;
}

.atlas-identity{
  border-bottom: 1px solid rgba(242,240,234,.2);
  padding-bottom: 26px;
}

.atlas-breadcrumb{
  display: block;
  font-family: var(--smallcaps);
  font-size: 12px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 26px;
}
.atlas-breadcrumb a{ color: var(--faint); text-decoration: none; }
.atlas-breadcrumb a:hover{ color: var(--muted); }

.atlas-h1{
  font-family: var(--smallcaps);
  font-size: clamp(32px, 5.5vw, 54px);
  line-height: .98;
  letter-spacing: .13em;
  text-transform: uppercase;
  margin: 0 0 8px;
}
.atlas-script{
  display: block;
  font-family: var(--script);
  font-size: clamp(24px, 4.5vw, 42px);
  letter-spacing: 0;
  text-transform: none;
  color: var(--muted);
  margin: 2px 0 24px;
}
.atlas-lede{
  max-width: 68ch;
  font-size: clamp(17px, 2vw, 21px);
  color: rgba(242,240,234,.82);
  margin: 0 0 14px;
}
.atlas-note{
  max-width: 68ch;
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 40px;
  border-left: 1px solid var(--hair);
  padding-left: 16px;
}

.atlas-section-title{
  font-family: var(--smallcaps);
  font-size: clamp(18px, 2.2vw, 22px);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 40px 0 16px;
}

.atlas-list{
  display: grid;
  gap: 16px;
  padding: 0;
  list-style: none;
  margin: 0;
}
.atlas-grid{
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
@media (max-width: 820px){
  .atlas-grid{ grid-template-columns: 1fr; }
}

.atlas-card{
  border: 1px solid var(--hair);
  border-radius: var(--radius);
  padding: 22px 24px;
  background:
    linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.018)),
    rgba(10,10,11,.78);
  box-shadow: 0 16px 42px rgba(0,0,0,.16);
}
.atlas-card .role{
  display: block;
  font-family: var(--smallcaps);
  font-size: 11px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 8px;
}
.atlas-card h2, .atlas-card h3{
  font-family: var(--smallcaps);
  font-size: clamp(18px, 2.2vw, 24px);
  letter-spacing: .1em;
  text-transform: uppercase;
  margin: 0 0 10px;
}
.atlas-card h2 a, .atlas-card h3 a{ color: var(--fg); text-decoration: none; }
.atlas-card h2 a:hover, .atlas-card h3 a:hover{ text-decoration: underline; text-underline-offset: 4px; }
.atlas-card p{
  max-width: 64ch;
  font-size: 15.5px;
  color: rgba(242,240,234,.78);
  margin: 0 0 10px;
}
.atlas-card p:last-child{ margin-bottom: 0; }
.atlas-card code{
  font-family: Consolas, "Courier New", monospace;
  font-size: .92em;
  color: rgba(242,240,234,.86);
}

.atlas-portico{
  border-inline: 1px solid rgba(242,240,234,.08);
  padding-inline: clamp(16px, 3vw, 34px);
}
.atlas-portico::before,
.atlas-portico::after{
  content: "";
  display: block;
  height: 10px;
  border-block: 1px solid rgba(242,240,234,.16);
  margin-bottom: 28px;
  background: linear-gradient(90deg, transparent, rgba(242,240,234,.08), transparent);
}
.atlas-portico::after{
  margin: 44px 0 0;
}

.atlas-flow{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.atlas-flow li{
  display: grid;
  grid-template-columns: minmax(150px, .55fr) minmax(0, 1fr);
  gap: 14px;
  align-items: center;
  border: 1px solid var(--hair);
  border-radius: 8px;
  padding: 12px 14px;
  background: rgba(255,255,255,.022);
}
.atlas-flow li + li{
  position: relative;
}
.atlas-flow li + li::before{
  content: "\2193";
  position: absolute;
  left: 50%;
  top: -16px;
  transform: translateX(-50%);
  color: var(--faint);
  font-family: var(--smallcaps);
}
.atlas-flow span{
  font-family: var(--smallcaps);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--faint);
}
.atlas-flow strong{
  font-weight: 400;
  color: rgba(242,240,234,.88);
}
@media (max-width: 640px){
  .atlas-flow li{ grid-template-columns: 1fr; }
}

.atlas-step{
  display: flex;
  gap: 18px;
  align-items: flex-start;
}
.atlas-step-num{
  flex: 0 0 auto;
  font-family: var(--smallcaps);
  font-size: 22px;
  color: var(--faint);
  min-width: 2.2em;
  text-align: center;
  border-right: 1px solid var(--hair);
  padding-right: 16px;
}

.atlas-meta{
  font-size: 13px;
  color: var(--faint);
  font-family: var(--smallcaps);
  letter-spacing: .12em;
}

.atlas-linklist{
  list-style: none;
  margin: 8px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.atlas-linklist li a{
  display: inline-block;
  font-size: 13px;
  font-family: var(--smallcaps);
  letter-spacing: .1em;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--hair);
  border-radius: 6px;
  padding: 4px 10px;
}
.atlas-linklist li a:hover{ border-color: var(--faint); color: var(--fg); }

.runtime-pill{
  display: inline-block;
  font-size: 10px;
  font-family: var(--smallcaps);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: rgba(242,240,234,.5);
  border: 1px solid rgba(242,240,234,.14);
  border-radius: 4px;
  padding: 2px 7px;
  margin-left: 8px;
  vertical-align: middle;
}

.atlas-return-row{
  margin-top: 44px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.atlas-return{
  display: inline-block;
  width: fit-content;
  font-family: var(--smallcaps);
  font-size: 13px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: rgba(242,240,234,.82);
  text-decoration: none;
  border: 1px solid rgba(242,240,234,.28);
  border-radius: 8px;
  padding: 11px 20px;
  background: rgba(255,255,255,.035);
  transition: border-color .15s ease, background .15s ease;
}
.atlas-return:hover{
  border-color: rgba(242,240,234,.6);
  background: rgba(255,255,255,.07);
}

.atlas-monument{
  position: relative;
  display: grid;
  gap: 10px;
  color: var(--fg);
  text-decoration: none;
  border-block: 1px solid rgba(242,240,234,.28);
  padding: clamp(20px, 3.5vw, 34px) clamp(18px, 4vw, 42px);
  background:
    linear-gradient(90deg, rgba(155,128,86,.12), transparent 26%, transparent 74%, rgba(115,148,127,.12)),
    rgba(255,255,255,.025);
}
.atlas-monument::before,
.atlas-monument::after{
  content: "";
  position: absolute;
  top: 10px;
  bottom: 10px;
  width: 8px;
  border-inline: 1px solid rgba(242,240,234,.2);
  background: rgba(155,128,86,.14);
}
.atlas-monument::before{ left: 10px; }
.atlas-monument::after{ right: 10px; }
.atlas-monument .role{
  font-family: var(--smallcaps);
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--faint);
}
.atlas-monument strong{
  font-family: var(--smallcaps);
  font-size: clamp(26px, 4.2vw, 44px);
  letter-spacing: .12em;
  text-transform: uppercase;
  font-weight: 400;
}
.atlas-monument span:last-child{
  max-width: 72ch;
  color: rgba(242,240,234,.78);
}
.atlas-monument:hover{
  border-color: rgba(242,240,234,.55);
  background:
    linear-gradient(90deg, rgba(155,128,86,.16), transparent 26%, transparent 74%, rgba(115,148,127,.16)),
    rgba(255,255,255,.04);
}

.topology-plate{
  margin: 34px 0 10px;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid rgba(155,128,86,.36);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(155,128,86,.16), rgba(115,148,127,.10)),
    rgba(255,255,255,.028);
}
.topology-plate .role{
  display: block;
  font-family: var(--smallcaps);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: 10px;
}
.topology-plate h2{
  font-family: var(--smallcaps);
  font-size: clamp(22px, 3vw, 32px);
  letter-spacing: .12em;
  text-transform: uppercase;
  margin: 0 0 10px;
}
.topology-plate p{
  max-width: 76ch;
  color: rgba(242,240,234,.8);
  margin: 0;
}

.orientation-set{
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.atlas-mode-card{
  color: var(--fg);
  text-decoration: none;
}
.atlas-mode-card:hover{
  border-color: rgba(242,240,234,.5);
  background:
    linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.024)),
    rgba(10,10,11,.82);
}

.atlas-legend{
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 12px;
  color: var(--faint);
  font-family: var(--smallcaps);
  letter-spacing: .1em;
  margin-bottom: 26px;
}
.atlas-legend span{ display: inline-flex; align-items: center; gap: 6px; }
.atlas-legend i{
  display: inline-block;
  width: 10px; height: 10px;
  border-radius: 2px;
  font-style: normal;
}
.lc-static{ background: rgba(120,200,120,.45); }
.lc-runtime{ background: rgba(200,160,120,.45); }

/* Progressive-enhancement mode selector (hidden until JS activates it) */
.mode-switch{ display: none; margin: 0 0 32px; }
.mode-switch[data-active="true"]{ display: flex; flex-wrap: wrap; gap: 10px; }
.mode-switch a{
  font-family: var(--smallcaps);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--hair);
  border-radius: 8px;
  padding: 9px 16px;
  background: rgba(255,255,255,.025);
}
.mode-switch a:hover, .mode-switch a[aria-current="true"]{
  color: var(--fg);
  border-color: rgba(242,240,234,.5);
  background: rgba(255,255,255,.06);
}

@media (max-width: 980px){
  .atlas-shell .column.outer{ display: none; }
}

@media (max-width: 760px){
  .atlas-shell{
    --corniceH: 58px;
    --stepH: 72px;
  }
  html.atlas-page,
  body.atlas-page{
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
  }
  .atlas-shell .columns{ display: none; }
  .atlas-main{
    width: min(320px, calc(100vw - 48px)) !important;
    max-width: min(320px, calc(100vw - 48px)) !important;
    margin-left: 24px !important;
    margin-right: 0 !important;
    overflow-x: hidden;
  }
  .atlas-main,
  .atlas-main > *,
  .atlas-card,
  .topology-plate{
    box-sizing: border-box;
  }
  .atlas-main *,
  .topology-plate *,
  .atlas-card *{
    max-width: 100%;
  }
  .atlas-portico{
    padding-inline: 0;
    border-inline: 0;
  }
  .atlas-h1{
    font-size: clamp(26px, 8.4vw, 32px);
    letter-spacing: .04em;
    overflow-wrap: normal;
    word-break: normal;
  }
  .topology-plate h2,
  .atlas-card h2,
  .atlas-card h3{
    font-size: clamp(18px, 7vw, 27px);
    letter-spacing: .07em;
  }
  .atlas-lede,
  .atlas-note,
  .topology-plate p,
  .atlas-card p{
    font-size: 15px;
  }
  .mode-switch a,
  .atlas-return{
    max-width: 100%;
    letter-spacing: .11em;
  }
  .orientation-set{
    grid-template-columns: 1fr;
  }
  .atlas-monument{
    padding-inline: 18px;
  }
  .atlas-monument::before,
  .atlas-monument::after{
    display: none;
  }
}